Hi! I'm here because someone posted the Designer for iPad video on the Procreate (by Savage Interactive) forum. Another person on that thread linked to THIS thread here and I registered just to post on it. Rest assured that we Procreate users are VERY much looking forward to the iPad version of Affinity Designer! We've long been looking for a vector iPad app that is on par, quality-wise, with Procreate (which is the best raster/painting app on the App Store, bar none!). Closest thing we've had thus far has been iDraw by Indeeo, but that app just hasn't received the same level of TLC from its developers and it shows (in fact, it appears to have changed hands and belongs to Autodesk now). Once Designer is released for iPad, it will be THE vector app for iOS. I'm sure you guys at Serif already know that, but it doesn't hurt to hear it from a user who has tried most (if not all) of Designer's major competition apps on iOS. :) I'd be using Designer for Mac right now if my Macbook wasn't in its geriatric stage... no moolah for a new Macbook so I've been doing all my work on iPad.
Anyway, yes PLEASE update us when you get a chance!