I personally have two hand made Stainless Steel blades that were ground into shape (using a belt sander and other devices to 'grind away' the extra material). Of course, after that I had the blades cyrogenically tempered to give them their strength and flexibility. A blade that is just ground but not tempered does become more brittle than normal due to the cooling process. But my sword was not allowed into a live steel competition because it had the habit of actually cutting the other swords (even managed to snap another's blade in half with it) and it still holds a razor edge.
The main question is - what do you plan on doing with such a sword? 99% of the time, you don't need a sword to rely your life upon and it will only occasionally cut water jugs or mats or watermelons. As such, if you are going with a full tang weapon, you'd be a little hard pressed to find a sword that will fall apart in that usage (I've bought $20 swords from the internet and/or con vendors that still work fine for these applications today).
My personal suggestion would be to go for the stainless surgical steel blades. Although they should still be maintained (i.e. wiped down with an oiled cloth after handling to remove human oils), the chances of them rusting on you are next to nil. Besides that, I'd say stick with the full tang idea and then just choose one which you really like the look of.