Thanks for the confirm, Bart.
Brad,
I find it useful for 4.6.3 ecommerce to use a separate registeration, because new-users who have to register as part of making a purchase can be presented with a custom registration notice that would not make sense if presented from elsewhere on the website.
I haven't checked yet, but hope Openacs5 /register offers a generalized application of context aware (subsite?) custom login messages. If not, I'll have to see what it takes to add it.