Hmmm... I have not got the mold yet, but the barbs would be the one thing that would convince me to get it. Years ago one of Do-it's ball head jigs had a single barb of similar size and shape, and of all my "plain" jig molds, these are still my favorite because of that barb.
Well, I do very much like the style. Some others who had gotten it said it was difficult to pour, particularly the 3/8 cavity. They had problems getting complete pours. I'm not having a lot of problems, but I do get the mold very hot. I will likely add a piece of angle to support the hook for that 3/8 cavity, as it tends to want to fall out easily. I've got other molds that folks complain about and it's just been a learning curve to get complete pours with them too, so I was ready to deal with this new mold.
I have no issue with the double lead barb, but with them being long, they tear up some of the plastics that I use. I've got a lot of older Do It molds and other brands and have modified some of my molds to make the barbs hold better, by filing with a small triangular shaped file, and then had to trim them too as it made them too long. I guess it really would depend on the plastics used. I have some bigger plastics that I plan to try with the heavier heads, and will see how that works with the barbs as they come out of the mold. If I have the same tearing problems, I'll again just trim the barb down. I would rather have more barb than less, and trim them to fit the plastic baits I may be using. That's easy to do.