I totally enjoy strap-on play. My man was initially very reluctant but so enjoyed giving me anal.
He has so come around,
frequently he chooses a harness, dil and lube and lays it on the bed.
Having been through too many harnesses with too much trouble, the right harness is key. I now use the Aslan Jaguar or the Spare Parts Jock. Either should fit you.
I am slim, 119lbs and 5'6". I also use mostly VixSkin dils as the base feels great vs my clit as I thrust.
Plenty of lube and warmup re a must!
I think strap-on play is becoming more common, both g/g and b/g.