I can't comment about about how it affects the tone of the drums, but having done with on a different kit w/ RIMS mounts, you do see more of the drums, meaning the shells aren't as obstructed by hardware.
The deeper your toms, the more potential for wobble and the lower your tom stand height will be. The kit I tried this on was my Granstar II kit that has 1" under power toms. I have a 15" x 14" tom and wobble was way too much. The 14" x13" was also questionable. My 10" and 11" toms were fine though. In the end I went w/ cradle type setups for the 15" and 14" toms.