In reply to Jeztastic:
Thanks for all the replies.
DMM customer service was great and confirmed you can use the carabiners with the bars removed, they have the same strength rating. They also pointed me to the replacement bars on the website, so I've bought some, and will use on case by case basis.
I had to buy a punch set from Screwfix to remove them, but worked fine. Just make sure not to scratch the carabiner with the saw like I did! Had to chuck that one.
Post edited at 16:28