Mine is actually switchin in out at my house on newest firmware, and OTA. Will catch 4G after airplane mode toggle when in 3G prior tho sometimes, so not perfect. But I'm sure the more complete stronge the LTE becomes, and with more software upgrades, it should get better.
My hero was amazing for me! My boss is currently useing with CM7 nightly and running fantastic with no signal issues what so ever. Everyone's different.
~Stock 2.13 LTEvo Certified replacement with screen bleed... waiting for second replacement tomorrow...
P.S. Stock blows!