The other option would be to go with multiple hub based powermeters. The cost is probably a wash for 2-3 hubs and you get the advantages of proven reliability and backup meters.

I don't think it's a great idea for someone to make the Vector their first powermeter. It's quite clear that making a reliable pedal based meter is difficult and their is a strong possibility that when and if Garmin finally releases the Vector it will have 'teething' problems that will take a year or so to sort out.

They aren't going to sort it out in a lab, it needs extensive testing in the field under a wide variety of conditions and installations. That the pro team is not able/willing to use it yet speaks volumes about the state of their development. For anyone familiar with software development, I think they're just about at the box that says "and then a miracle happens".