On the few occasions that I have used paintable blown vinyls, I have always regretted it because of its vulnerability to 'scrapes'.
Carry a suitcase up or down the stairs and catch it on the wall - and you can end up with the blown vinyl just being scraped off the paper. Smaller scrapes can be created with a ring - or even just a finger nail or a watch. Because of this I just wont use the stuff - because there is really no effective way to repair such a 'scrape'. You can paint it over, of course, but you cannot repair the damaged pattern.
Unfortunately, availability of genuine anaglypta is poor - and their patterns have not changed for donkey's years. My personal view is that embossed anaglypta is significantly superior to blown vinyl because of its resistance to damage - and I cannot understand why it is not more widely used - and why more patterns are not available.