This is my third year of using the Motoport over pants and short jacket, I like it. I wear it on the ST as well as when dual sport touring. Riding down the road, it's like you are wearing nothing, stopped it's hot though- probably nearly as hot as non-mesh gear. And this stuff is tough. I have had a couple of minor get offs on the XR650L and the jacket doesn't even show it. My Kilimanjaro has some scuff marks from similar encounters. But, if I was ordering today, I would order a little differently.
I ordered over pants since I commute on the bike. I can wear shorts or jeans underneath without the need to change clothes when I get to work. But, this means the pants are bulky, even more so since I fitted them to allow the liners. I would go with regular pants and a jacket fitted without the liners, and for the 3 months of summer we have here, just change when I get to work.
The liners do add a great deal of warmth as well as make the gear waterproof, so this probably could be a 3 season suit. But they are bulky to carry along. And if you encounter rain, you have to stop, take off the gear, put in the liners and put everything back on. It's much easier to slip on a rain suit by the side of the road.
My preferred summer riding set up with the Motoport suit is to take my Gerbing gear, with a rain suit. Use the Gerbing if it's cool, plug it in if its cold, put on the rain suit if it's really cold. Slip on the rain suit if it looks like rain.
I also took out the chest and back pads. They blocked a good deal of air flow. I believe the chest protection to be overkill for me. The back pad wasn't as easy a decision- I take it out if I will see temps over 90, but leave it in for lesser temps. My choice, you may feel differently.
If this stuff ever wears out, and I'm not sure it will, I will order another set.