Pat C
I picked one up this spring and have worn it all summer. The jacket without the liner is good from the high 50's to the low 70's. When it gets hot 75+ take the outer panel off and the mesh is perfect. I can even take the panels off without taking off the jacket, (not possible with the Joe Rocket Alter ego). It does take a few minutes to zip it on or off but it's not really and issue for me. I also like the armor, it extends down the forarm almost to my wrist. The one thing I had to get use to was not having the zipper go up to the collar or a snap closure at the collar. If you sit just right the wind will go right down the front of the jacket. Not a bad thing when it's hot out. I don't experience this at all with the quilted liner in.
I have worn it a few times with the quilted liner in it for rides to work in the morning. This morning the temps were in the upper 40's and I was totally comfy with only a t-shirt and an undershirt. I will be going back to my winter jacket and pants soon but I'm happy I have this jacket for early spring through the beginning of fall.
I hope this helps.