Everyone should take the time to relax with a beautiful poodle tbh. But I'm totally cool with that! He would most likely recognize Viktor as "the guy with the dog" for a while even if Viktor was there without Makkachin but he'd slot him as a semi-frequent visitor and he'd be inclined to chat him up and get to know him. Luke as a whole is pretty personable so as long as Viktor doesn't mind a somewhat chatty bartender when he comes to relax I think this is a pretty good set-up!