I use a wood stick and I think it gives a nice grip.
What it helps me with
Grip (and grip knowledge)-It allows me to have a way (yyyy) better grip on the stick. I normally play LW or C (RH player), I am normally good with FO's, but the tape allows me to set up a good grip, especially on my backhand. It helps me know where my hands are and make quick adjustments when deking and running.
Puck Handling- It allows me to deke better with the added grip and awareness where my hands are (not that I don't know). It gives me an idea where to move the puck and where it is gonna go to when I shoot/dump it.
It looks cool too
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I could go on though, anybody interested in a pic (just to show what it looks like)?