Our GM has instituted the "5 hands" house rule for weapons (you can only carry 5 hands worth of weapons into battle.)
For my Librarian, my issued equipment is:
Force Staff (2h)
Bolt Pistol (1h)
Bolter (2h)*
So if I wanted a hand flamer (1h) instead, I'd have to leave my bolt pistol at the base to follow the 5 Hands rule.
Several of the players say it is Heresy not to carry all your issued equipment..but this means I could never use a different weapon!
I disagree... my theory is that just because a Space Marine is *issued* something doesn't mean they have it with them all the time: it's mostly in the Armory except when checked out, under the care of the Adeptus Mechanicus, being cleaned, the machine spirit administrated to, etc.
This is the same with modern soldiers (except for the whole machine spirit part, but I know at least two retired soldiers who would tell you their M4s had a machine spirit!): when on a secure base you don't have your weapons, they're in the Armory. You collect your weapons from the Armory during load out, and may select different weapons (with approval, the whole Requisition process) based on Mission Parameters.
Thoughts/commentary?
* But weildable 1h because we're butch Marines, right?