It does get very cold in north India, and i generally go for my rides in early mornings. and i already have a alpinestars tex jacket.I had a Joe Rocket, not the blaster 4.0 though (I don't keep up on the current Joe Rocket designs). It was a good jacket. Thick leather, good stitches. I would not worry about it falling apart in a crash.
As for the venting, it was ok. Still got hot. Just unzipped it, and rode with the jacket partially open. Since I notice that you're from India, why don't you want to consider the perforated leather or even mesh jackets? I mean, I can't imagine i getting cold there. The perforated leathers ventilate very well (I have an Alpinestars stage jacket). You would be surprised at how well perforated leather can cool you, I know I was. Probably on par with the mesh jackets with the added protection of leather.