Since they are acclimated to local conditions, I have a hard time seeing a downside to getting them out of the pots. None of the issues with late planting that I am aware of apply here. They should be perfectly hardy, so the advantage of keeping the pots in a warmer place doesn't apply. There isn't a worry about out-of-sync plants wasting energy breaking dormancy too early. They should have decent rootballs, so hopefully the whole mass doesn't collapse when you unpot them. Keeping them watered shouldn't be a big issue. Anything else will be a problem next winter also (voles, I am looking at you) Go for it.

Thanks for the encouragement. One's in black plastic nursery pot, so I can just cut off one side and slide it out. The other I put in large permanent pot but based on Chris' recommendation I will put it in the ground. I'll try not to be unnerved if it collapses, and probably don't want to plant it encased it that much potting soil anyway.

AH , voles. Past two years I have had bad vole damage and removed most of my roses so these two are replacements. I plan to use hardware cloth cylinders when replanting.

Another vote to go ahead & plant now that your site is ready. Two & three gallons are usually simple to ease out for me. If they don't want to budge, sliding a long knife along the inside of the pot to release it works. Sue