Absolutely!
There is training, and there is reality. In fact most folks I dive with stay tight. I generally like that in a buddy. But not always, especially if I have a camera, and they are say.. speerfishing! :shocked2:
It also depends on the type of diving you are doing. 30' on a reef with a hard bottom is not a dive where buddy skills are liklely going to come into play. 100' on a wreck, IMO you best have a buddy who takes diving seriously.
I find that dives are more enjoyable when you are sharing the experience with a buddy. So it's good to have a buddy for more than just a backup air source.
I dive with a guy that races around. He also blows through air at an alarming rate. I generally don't bother doing more than keeping an eye on him. Ironically this is not a young guy (read old), but he just loves to kick as hard as possible, and run around during the dive. If your husband falls into that catagory, then you may want to find an alternate buddy!