This AlphaCool's Eiskoffer kit would go amazing with my 2 alphacool nexxos monsta rads that have been sitting around for 3 years after I had planned to do a rigid WC system and have moved twice since then which messed up those plans.
I think that you're only going to get the ROI out of this if you do a lot of hard tubing. And if you do a lot of hard tubing, you've probably already got processes for a lot of this. However, I can honestly say, I would buy it and in fact, if I start doing more hard tubing in my builds for friends and such, I probably _will_ buy it. It's one of those "life easier" purchases that transcends raw cost.
I've used other hard tube kits, but this thing is, far and away, more complete. It may seem like a small thing, but including the gloves, for instance, means preventing two separate purchases. For someone just getting into hardline watercooling, it can be an overwhelming experience; saving them from one more complication means a much greater chance of a successful project.