started out without clipping in
wearing running shoes, took about
2 or 3 sessions and I felt comfortable enough to
ride clipped in.
I can get out of clips (speedplay) really fast if need be
and when you're going over, the need is real fast.
Most commercially available sweat guards don't work
with rollers (at least for me) they limit hand position
too much. I bought some foam pipe insulation, cut it
to fit top and down tubes and just wipe down afterwards.
An old sweat band with some velcro works well on headset.
For safety (ok, its my crutch) I keep a plastic stool on one
side of the rollers, if I need to bail I don't have to worry
about the drop to floor (I have large diameter roller, like
Kreitler alloy's about 4 or 5 additional inches to floor).
If there is anything about your bike that is mildly annoying,
it will be much worse when you ride rollers.
yeah, I like em

marty