Mainly I don't go tubeless because when I do have a flat (had only one so far this year, picked up this monster nail with my rear wheel, don't know if tubeless would have helped any) I can remove and reinstall the normal GP5000 tires with my hands and I'm afraid if I run into a puncture with the TL version where I have to install a tube to go on, it'll be really hard to wrestle the tire off and on.
Don't know about rolling resistance gains... they use chunky butyl tubes (Continental 28 race instead of race light / supersonic) for these comparisons. If you really want to drive the rolling resistance, you use latex tubes, still the best thing around for rolling resistance. TL offers an attractive mix of rolling resistance and flat resistance though...
Otherwise really like my GP5000s.
Last edited by Branko D; 08-12-19 at 06:28 AM.