I dont think it would then again by the time I got my first spell pen II scepter I was out of the starter robes. Now due to twinking I dont wear the robes long enough to test but I think I can check on Thelanis sometime this weekend with one of my newer builds to let you know. As you go up in level you will recieve items that help boost spell pen and potency or even the spells you wish to see enhanced the most.
On my main Kalari im lucky I went threw the Dragon touched armor lotto as I call it and got robes that have potency on them. I think I also have a set of spell pen 8 robes. I do have back up potency scepters for just in case a long with superior lore scepters that I swap out depending on spells like my superior kinetic (force) fire (firewall, scorching ray, fireball) and ice lore (cone of cold, freezing sphere, polor ray)
Was tempted to try to get the glaciation set but im so annoyed with the reavers refuge to keep doing so and have yet to pull the bracers on my wizard though my cleric has a a pair *sigh*
I like keeping a variety of spell enhancing equipment on all my girls. It helps to have anything that will help crits with spells.