Thanks Chocohead. Do I need to log that as a change request somewhere?
Documentation for the key combination Boost Key + Mode Switch Key to enable/disable Jetpack mode was added to http://wiki.industrial-craft.n…tle=QuantumSuit_Bodyarmor by Escain, Revision as of 19:53, 21 January 2015. That's different from the Gravitation activation key documented at [IC2 Exp][1.7.10] Gravitation Suite v2.0.3! – so it looks like there was intent to implement it at one time.
I looked for an upgrade slot in 2.6.142-ex110 and didn't see one. Thought about solar panels, but, you know, nighttime. Only on a tier 2 network though, so crafting transformer wasn't bad.
Is it still possible to enable/disable the jetpack on quantum bodyarmor? Jetpack works; space-M works to toggle hover mode; but LCtrl-M doesn't turn jetpack on/off in Industrialcraft-2-2.6.142-ex110 (Direwolf20 modpack). I've tried reassigning Boost and Mode Switch - doesn't help. Turning off jetpack mode is really useful: Minecraft's autojump bounces you around, and I'd still like to swim while wearing armor 
