I wouldn't buy the German one, and especially not some vintage variant, it's just too much of a price for what the instrument can do. I'd get much cheaper Asian copy or something like Hofner Ignition series, that's like 'official' Hofner one but made in China (kinda like Squier/Fender thing).
Yes, the floating bridge design is annoying. True, there's neck-dive. The string spacing around the plucking/picking area is narrower than some typical Fender 4-string, on Hofner violin basses the strings don't "fan out" as much from nut to bridge. The controls are indeed weird, and weren't even improved or changed all these decades, because everybody wants it just how it was "originally" and I see a lot of people (even here) mod their Hofner violin basses to match Macca ones even down to some minor cosmetic things.
But it's whole lotta fun to play, that is for sure. Nowadays there are many Asian copies or clones that are probably even higher quality than what Paul originally bought in '61. I have a very cheap Korean (apparently) version and after a set up, it's great. Put on some flatwounds, and it's 'that' sound. I plan to make a different control plate though and rewire it into VVT.
The only thing to keep in mind is that even though the scale of the bass is 30-30.5", it has a tailpiece, so you gotta get Medium scale strings, or in general choose them carefully. The short-scale strings (unless made specifically for these types of basses) usually are too short, long scale ones are too long and too fat to get into the tuning peg hole, etc.