Good luck to them, I guess, but I can't see this going anywhere. The other handhelds succeed because they have games people want that can't be played on anything else. I doubt many people are gonna buy this thing just to play games they can probably already play on their phone or their PC.

I honestly have no idea how anyone else could elbow their way into the handheld market right now.

Yay! More consoles! Because history has shown us that's what the industry needed!

The Nvidia one is just downright stupid. Bad timing, lack of real uniqueness (there are already dedicated android gaming devices and controllers to use with them), and general lack of forethought. Plus by limiting streaming to Nvidia cards, it means that everyone with a perfectly fine AMD card that should be applicable isn't. PC Gamers with an Nvidia or high class AMD GPU are already a niche, and they're forcing the handheld to work with a niche of a niche. The PS Vita is more likely to sell than this thing...

And here is an article with a lot more hand-on experience as well as some details:
[link]

First, the good:
-Streaming is actually good, people who played the Borderlands 2 demo could not notice any lag and it seemed like the game was rendered by the controller itself.
-The games that were on the controller seemed to be competitive to current gen consoles graphics wise (but this was with a short demo, so it is only an estimate.)

Now the bad:
-Streaming from the PC requires a 600 series graphics card (the current market is now having the 400 series be the standard.) So you must have a very high end PC to even do it.
-Streaming only works for when the Shield and said computer are on the same network, can't do it over online or in any manner that would make one consider using a 720p, 5" screen over a 1080p 24" screen for general needs.
-Your wallet will be non-existent after buying the Shield.

Here's a clip from the stream of CES 2013 which the article cites:
[link]

Much more information there.

Is it okay if I'm both skeptical and indifferent to this?

I doubt that very many people outside of the PC gaming market know what NVidia is, while those who are PC gamers will lap it up. As such, I'd expect it to be absurdly expensive.

Almost the same song and dance as the Ouya, save that this one is true mobile (if the battery holds up) and such, except two things:
-It has its own store instead of Google Play. Said store is already online for tablets and is rather lacking. Now, there is the advantage of people who put anything in this store have a limit on device that will be playing it, all of which use the Nvidia Tegra graphics chip. So it might as well be considered a new system all together.
-The PC connection sounds like trouble. Are we limited to small, certain games or can I play Skyrim or any other game on this device? Is it a form of remote PC or something else like what the PSVita and PS3 does? Not a lot of details to really make me all that interested.

As for the PSVita or 3DS killer, very unlikely as we are talking about two giant systems with years of game libraries sitting around just for them, compared to a system that will have a small library at launch (assuming that you can even access games like Princess Putt) and will have to convience users and consumers to support it over readily available smart phone devices (like, I don't know, an Asus Tablet Eee Pad that runs off of a Nivida Tegra chip and just go buy a controller or use a Wii Remote controller mod.)