I thought about them and changing the seat too since virtually each of my rides is 600 miles as fast as I can - of course within the legal speed limit.
In reading threads here I found a workaround that has served me well for the last 8 rides or 4,800 miles. I use a stock seat and when on the fairly deserted highway I put my heals on the passenger pegs and my knees on the fairing pads. That gives me four points of contact - heals, knees, butt, and hands. Takes the weight off the seat. I also occasionally will briefly rest my calfs on the tip over bar covers to stretch my knees. With this work around I'm good for 2 to 3 hours between rest stops.
I'm sure the highway sticks will work great, I just didn't need them. I'm 6', 34 inch inseam, 185lbs.