I bought the Olympia Dakar jacket. It is virtually identical to the Airglide except it is a 3/4 length, rather than the shorter version like the Airglide.
Zippers on all my Olympia gear have been great. No issues at all. I use mine daily and the zipper pull broke on my older AST2 twice. I contacted them and they sent new zipper pulls at no charge. Yeah, a minor thing, but the owner of the company is the one who answered my email and made sure it happened. I was willing to pay for the shipping, but they shipped it free.
I find the quality of their gear to be great and well thought out. Zippers are great. Snaps too. The neck detail is good. Comfortable. It secures well to close it, or to store the neck flap out of the way. Sleeve closures are done well too. Comfortable and they close well. The Airglide will allow a lot of air to flow through. With the waterproof windbreaker and the insulated liner, you could almost make this a four-season jacket, depending on where you live.
Even though my Dakar is the old, lousy, out-of-date, obsolete Dakar and not the new and improved Dakar II, I was able to use the waterproof windbreaker as they advertise on the outside of the jacket. The waterproof windbreaker is really a great feature. It works as it should. When you get to your destination, you have a nice jacket to wear. You might even say it is stylish. That may be stretching it.

And you can wear it on the inside of another jacket if you like to be a lightweight liner layer. Or to add a waterproof layer to what you're wearing.
I haven't used the quilted liner on the Dakar. Normally, when it gets that cold, I just move to my heated liner.
Sizing on the Olympia gear seems right. I normally wear a large in gear from other manufacturers and I do in Olympia gear. There's generous sizing in the body...and also some ability to cinch it up so you don't feel like you're wearing a tent that flaps in the wind.
You should be able to find Olympia gear offered in your local area, so you can look at it first hand and try it on for sizing. You generally won't find any discounts, unless you find a closeout. CycleGear will sell it to you and if you qualify for a military discount, they'll give you 10% off.
I didn't start as a die-hard Olympia fan, but when I got my first Olympia jacket, I was extremely impressed with the features it had compared to my TourMaster jacket I had at the time. I had the Olympia AST2 for several years. It saw daily use in all kinds of weather. The only thing besides the zipper pulls I mentioned above is that the velcro got a little weak over time. The only reason I sold it, was that the Olympia Ranger was on closeout and I couldn't beat the price. The Ranger was the successor to the AST2. If I had to buy more riding gear, I'd probably just go back to Olympia. It's hard to beat the quality for the price.
Chris