I used to buy import CDs from a shop that had split in two this way, Minus Zero/Stand Out in west London. You could ring up and one of the Bills (Forsyth) would recommend things if they didn’t have what you wanted. I believe the Bills did fall out, though by the time the shop closed in 2009, they were both seemingly working there simultaneously, so who knows. My memory is increasingly fantastic. Anyway, the shop is now (or was, last I saw) one of those very white-painted boutiques with about 20 pricey blouses on the rails. (I also wrote about a split shop in Giant Days #6 (Boom!Box, 2015) but that one was run by twins who seemed quite cordial.)