For those of us with the shower coming off of the sink we could go with something like this:
RINSE ACE Snap 'n Spray 6 ft. Quick-Connect and Detachable Hose with On and Off Sprayer-4170 - The Home Depot
Add that to a high sink faucet--although you wouldn't want it too high then you couldn't open the cabinet behind the mirror.
Or use one designed for an RV, not sure if this one would be any better than the one we already have:
Dura Faucet (DF-PL720A-CP) RV Lavatory Faucet with Shower Hose Diverter
This one may match the finish better on the Axis/Vegas:
Dura Faucet (DF-PL720C-ORB) RV Lavatory Faucet with Shower Hose Diverter in Oil Rubbed Bronze
LOL of course if you read the reviews many people are disappointed with them because they are mostly plastic--like most faucets in RVs! One reviewer noted that their child's toy sinks were better constructed and they wouldn't even recommend them for their intended RV use!
We could also get a standard sink and put one of these on (much like the Snap & Spray above although this looks to be a bit better):
Shower Arm Diverter
A whole category:
Diverter valves
Of course you'd need to install a taller faucet to be able to use a diverter--frankly my whole reason to do it would be to put a taller faucet in.
Makes me wonder: could we put in a utility sink faucet and insert the diverter between the base and the spout?
Utility sink faucet