Dont do it, you'll get device not responding errors from the ISY UI when the switch to the bulbs is off. As for better scene controls, I don't see how this helps, can you give a longer example?
I have a room with vaulted ceilings and 10+ recessed lights. Not very easy to rewire. My thought was to add insteon bulbs to the curcuit so that I could control how may I wanted to turn on.
ie) at night only keep a select few on, but dimmed over specific areas.
Technically I can get by fine without this option, I'm just investigating possibilities.