If you went to your dentist, and he/she was performing a separate procedure, on another patient, at the same time as you were being treated, would you be happy?
Not a great analogy as my dentist does precisely that! Generally flitting between rooms with three patients on the go - typically one in the hands of the hygienist, one waiting for the Novocaine to kick-in, one actually under her treatment.
The reality is that some of the provincial airports really need to look at this type of technology if they wish to remain economically viable.
Uberlingen was so long ago wasn't it?
Another bad comparison.
That is en-route control, not Tower. And the sharing or merging of sectors under quiet conditions is established practice in that context. The only thing Uberlingen demonstrated is that you have to do it correctly.