Carl I haven’t used the Rockler jig but it appears like it would work well. I like the idea of being able to do either individual dowels or using the beadlock tenon. That looks like a nice feature/design they have. As I’m sure you know it isn’t for high production rates. I have the JessEm dowel jigs and for my one off occasional use it is close to as fast as I can make use of my biscuit joiner which I’m sure is as fast as the Domino tool. The dowels offer locations in smaller places. Granted for larger panel glue ups the biscuit joiner is my go to tool. I’ve also been pleasantly surprised with the precision of the dowel placements with my jigs. The Rockler tool looks like it could work well.
Thanks for the measurement for the beadlock spacing. My JessEm jig has 3/4” spacing for the 3/8” dowels and 1/2” spacing for the 1/4” dowels. While I’m very happy with my JessEm jigs that makes the beadlock not work with my JessEm jig. When I laid it out I see that the JessEm spacing wouldn’t work with the beadlock design but does allow putting a full dowel between the 2 holes if desired.