I do like it with those controller attachments, it does improve it further still be sacrifices a bit of portability in terms of no longer being pocket friendly.

I do agree it can be uncomfortsble after a time but for me that is more after hours opposed to minutes but everyone's bodies are different and I can see why is may cramp some peoples hands quicker.

I find with the steam deck it is just a bit too large for me, it makes it feel a bit unwieldy and unstable in my hands for some reason. For me I think the sweet spot in terms of comfort would probably be something in the middle.

It probably has a lot to do with the kinds of games I play on it as well though. On the vita I played a lot of jrpgs, it really was a beast for that genre, and with those games it can be a lot more menus with turn based combat etc. That means I'd often play with it flat on my lap and not gripping it like a controller which is definitely a less cramped position.