The OEM top has the sunrider feature, so I really don’t see your point. Is there something different about the Trektop sunrider that functions differently?I can have the Sunrider closed before you can get the OEM or Supertop (very similar design) halfway up. Granted, there is a section of top over the back seat, but since I have only had one person back there in over 6y years of ownership, it's not a bad issue.
That is one thing I love about the Trektop, it is almost topless, yet I can have the Sunrider closed in less than 30 seconds from the time I stop the Jeep. I won't get the three windows in any faster than you do on the full framed top.
If you take the top completely off, then you will need a sunshade or lots of sunscreen. I just close the Sunrider.