Hmm.. If you posted a scrolling version on here, I would probably read it here. Just because I'm more familiar with DA. I'm also 100% fine with reading it on Tapastic, because I understand it can be a lot of work to keep everyone happy. The Tapastic version is a more than suitable compromise for me, personally. I would assume most would also share that viewpoint.. but I really can't say. I wouldn't mind page-by-page if DA's format made it easy, either.
Maximizing the most page views is very important, but if you think doing all of that would be too much work to bother with it's not worth it. I also think that an "updated" scrolling format would be hard to keep up with. I'd have to pay attention to when you released a new page and then go back to your scrolling version to see it. And at that point, why is the scrolling version necessary? I may as well read your individual updates as they came out since it's only annoying when clicking multiple pages in a row. I hope that made sense. My point is, for people worried about getting updates as soon as possible the format won't be as much of an issue since they'd be on top of it and reading each page immediately.
If you really want to make a format for everyone, I think the best would be page-by-page as completed udate>Tapastic update> upon chapter completion scrolling deviation. Well, that's my take on the matter. Hope it helped you somehow! Feel free to ask me anything else you want input on