Reborn has a version for both as does CM7, however they are specific for good reason.
No, bricks don't happen from people trying S roms.
(Most) Bricks happen because people trying stupid things without a proper backup system first (nandroid, nandroid, nandroid!).
If you have a nandroid backup, you should be fine trying them, however you will end up with several issues that need fixing. Often 3g goes out and will not come back without running the activate app, which may or may not run on an S rom, depends on the rom. Tweaking the build prop beforehand can stop this sometimes. Second the buttons are switched. third, your accelerometer and possibly wifi may not work. Needless to say, bluetooth likely will not either.
But it will boot. Probably.
I've tried several of them (Thunder, Nrom, Lego), and none will work just by flashing it. Swapping over the related files and changing the buildprop will get you close though.
Sorry,
But I find it VERY difficult to believe people are truly bricking their phones just by using an S rom, unless they fail to make proper backups first. Like I said, I have done it. Nrom, Thunder rom, Lego Rom. Lego Rom was what I used to figure out how to get Xionia kernels working on the V.
MAKE A NANDROID BACKUP FIRST!
And save it to your computer!
Just remember you are doing this at your own risk, and you have been warned about what will happen.
Honestly, at this point there is little reason to do it though.