I run into that with my vet also leiwache. In all accuality it really irrates the heck out of me. Having been a tech at one time I understand the liability and the reason for the tech being there, however, I firmly feel they should judge the situation and make allowances. I don't appreciate handing my dog over and am in the process of finding a new vet as a result of that and several other occurances.
The last time I stopped in, will be my LAST time there. I stopped in just to have them sign off on Lexus's therapy renewal papers, and proceeded to be (IMO) interagated by the vet as to whether or not my dog's temperment would be suitable for that sort of work. Keep in mind that my vet's office houses about 5 vets, and this particular one had last seen Lexus at about 4 months old for vaginitis. He had to first consult her chart, then commented that she was a doberman and that they tend to be nervous, and maybe therapy was a questionable choice for her. Needless to say I walked out relatively POed, as he clearly didn't even recall her, and she has always been a model citizen at the office, being taken there nearly weekly until about a year old for weigh-ins. How dare he, once again, IMO.