Ah gotcha! I've never owned a commercial radio so just wanted to see if you could work analog repeaters before pulling the trigger. 73
I haven't used one of these BKR's yet, but I (like many others) do use commercial radios for amateur radio use, including the L3Harris XL-200 line.
None of them do standardized offsets on the VHF band, as there isn't standardized offsets in the LMR VHF bands. You have to program in the TX and RX frequencies separately.
On the UHF LMR band, 5MHz is the standard offset, so that usually works fine with the 70cm band. "Standard" and not mandatory, but very common.
Although different radios support offsets differently, you'll need to talk to someone who owns one of these. I've found some LMR radios will automatically set offsets on UHF, 700 and 800MHz bands. Some don't.
Do pay attention to deviation. Some LMR radios will force you to narrow band on UHF, and sorting that out can be a challenge on some brands.
But, most of us that work in the industry and have our ham licenses use LMR radios. You'll be joining a pretty big club.