Joe,
I had my first Alembic built when I was only 19. I sold every other instrument I owned and gigged A LOT to pay for it. It was the right thing to do, and ended up paying me back in no time by giving me the tool to take my playing to a higher level (don't worry, it's since gone way, way back down!). On the upside, an Alembic bass will give your sound a clarity which will get noticed. On the downside, you'll probably need to develop a cleaner playing style than ever before. On the upside, that will be easier to do than ever before because you will for the first time actually hear what your fingers are doing. On the downside, you'll probably forget about people and food. On the upside, those people you forgot about will be hanging around saying whoa, that sounds incredible!! while ordering pizzas. On the downside, you will ultimately be the one who gets to clean up their mess. On the upside, a good clean Alembic needs a good clean house (somehow mine doesn't seem to need such a clean house, but I digress...). On the downside, you'll have to leave the good clean house to gig. On the upside, you'll be gigging with an Alembic...
John the verbose one