I've seen where the keyboards for MBP get super hot without even doing much and i've seen alot of setups where people have the iCurve, external keyboard and mouse and I want to know would that be a good idea since the keyboard gets so hot?
I know I used to use my laptop as my main computer and used an external monitor, mouse, and keyboard. It was a pretty nice setup, it's just like a normal computer. Though obviously not very useful if you don't use it the same place much.
As far as getting too hot, that would have to a personal choice. It's easy enough to use a cheap USB keyboard and try it out. I did find it a little weird using an seperate keyboard without an external monitor.