Short answer: Yes.Quote
Does the speed of the USB have any impact in the real world for download and upload speeds. The one I am using now is old and rummaged from the bottom of my junk draw. I need to pick up some more SD cards and can easily afford a new high speed 32GB stick.
Long answer: It depends on which kind of files you are shareing and if these can be buffered by the OS pretty well. I would start with the stuff you have and do some tests.