verizon has said they dont check for rooted devices,and there have even been a couple reports of replacement thunderbolts coming rooted

gives you alot faith in vzws refurb program
however,thats not to say that policy wont change. with the ability to easily root by a "factory legit" method instead of hacks and exploits now guranteed to anyone,its quite possible that they may tighten up the reigns.
not to mention that any devices passed along to htc for mfgr warranty back to vzw,may certainly be well scruitinized as well.
after all,theyre both in it to make $$,and you
did check the lil boxes saying you understood that your device may no longer be covered.
will anyone notice your
relocked?? prolly not. but there are no gaurantees.
best advice i can give is make sure youre payin the $7 a month for asurion. that way,if you have trouble and send your phone back in,the worse case is you have to pay the $90 asurion deductable,and not full retail for the phone.
asurion dont care as long as you pay the premiums. you can send it in rooted,broken,smashed with a happer,or not at all(it covers loss too) and all you gotta pay is the deductible.
dont know if that makes your decision any easier
