Most of the compatibility charts I've seen deal with the 1 series, 5D and 20/30D, you may have to dig a little to see about the 350D. That being said, the Canon camera that stands out with the most issues is the 5D due to mirror size and some apparent clearance inconsistencies out of the factory.
Most folks recommend leaving an adapter on each lens. They can be a bit awkward to get on and off - at least when you're in a hurry trying to change lenses.
With the pixel density of the 350D, I think you'll be pleasantly pleased with the results you get. Now if you ever decide to sell some ...