Heres the deal:
I plan on mostly shooting and small game hunting with the 10" 22LR Match barrel. I will probably carry the .44MAG for deer on occasion, limiting shots to <100 yds, scoped. I plan to get a Bandito belt rig from pistolpackaging.com for a scoped 10" barrel.
I have no experience with the 10" vs 12" 44MAG barrels, but from what I have read, the difference in recoil and velocity should be negligible (for my purposes).
If this is true, then I lean towards going with the 10" for more comfortable carry.
I'm not sure I understand what the extra 2" would add in terms of resting assuming you would always rest the (non-custom) forearm, not the barrel.