I have played it a few times, it doesn't really compare to Ice Cold Beer. It could add a little variety to your game room, but ultimately it isn't a very good game.
It's not that great.. and pretty uncommon outside of MN, really.. Irem's service center was in St. Paul and there was a stock of around 100 unsold Hill Climber machines that one operator ended up with and tried to hock for many years..
There is a reason nobody bought it.. but if it's $100 or so it's something interesting to play with..