i know it's not common to do this. but if the specification of the torque are higher then STD servos. Do you really think they will burn or brake if they used UNDER those torque numbers ?
when i look on the UCD ELE , it's not that big surface for one servo. (i'm talking on each half). yes on the glider i didn't have any issues of vibrations but i think the forces at times where much
higher then what it will ever be on a UCD.

using micro servo will save weight of 2 STD servos...

i'm not sure still debating here , i have STD servos ready to install (Hitec 545BB, Futaba 3001,Tower TS-69BB (from my Kangke Fun 50 - almost identical plane to the UCD46)
. but the Micro are more impressive in SPEED , TORQUE and WEIGHT.