Just for those who stumble upon this issue before you implement vCard 3 support: I used a regex to remove all the Google Plus profiles from my address book.
Download and back up the vcf file. Use the regular expression to find and replace by nothing (did this in Geany, but any other reg exp find/replace will do) Save vcf file, check diff just in case, re-upload.Did this with ownCloud, and all my contacts seem to show on my device now.
Here’s the reg exp:
^ITEM[0-9]+\.URL\:http(\\*)\:\/\/www\.google\.com\/profiles\/.+[\r\n]+ITEM[0-9].X-ABLABEL:.+[\r\n]+