It's nice to see large outdoor companies doing some innovation. I personally prefer my windshirts without a hood, because I much prefer a hat over a hood (easier to see, hear better etc). If it's cold, I'll toss on my beanie and if it's raining or sunny the I'll toss on my large brimmed rain hat.....or both if it's really cold and wet.
The MH windshirt is a super neat product, but personally I've become such a fan of windshirts that I think I prefer to stick with something a bit more durable since I wear it all the time. I can't see that MH windshirt using 7 denier nylon lasting a very long time. My Montbell Ex-light vest uses 7 D fabric and I normally only wear that under my windshirt to protect it.
MEC sells an 'RD Windshirt' that is low on frills (just one pocket which it stuffs into, waist hem but it's easily removed) that weighs about 140g. The nice thing about this windshirt is that all the weight is in the fabric. It's a nice light but not superlight nylon that keeps the weight down while still providing enough durability to last a long time. I think it's a good compromise and the $78 MSRP is right too. The other nice thing is that the cut is nice and long (no plummers crack here) and the material isn't shiny like most of these light fabrics.