Yes you'll still see a difference... feel and hear the difference really! Don't use anything longer than about 5-6 feet of whip, just enough so the connection is on the floor whilst using the wand.
Saying that, with a porty you will probably get away with using the softer more flexible 2" hose like Nick sells so you may well be able to use it straight on to the wand. I got some and tried to use it with my TM but it just kinks and pinches up when the vac locks down.
I didn't get on with the reducer cuff to step 2" hose down to a 1.5" tool - the weight of the hose levers the cuff off the wand, forever pushing it back on.