Using a printer switch to switch between controllers?

I am running out of space in my tiny shop and rather than dedicating a
computer for each small CNC machine I'd like to have two controllers
hooked up to one computer through a printer switch.
These are small controllers, Taig and Xylotex and no, I won't be using
more than one at a time...
Are there any issues I should be aware of like voltage/current drop,
unreliability, total destruction of the control, etc? Anyone doing this?
The printer switch I have is old - I know some changes have been made in
communication between printers and computers in the last, um, 6 or 8
years, are there big diferences in switches?

TIA,
Nick
--
felice@... is Nicholas Carter and Felice Luftschein. See our
homepage at www.cartertools.com/nfhome.html