Ken, I believe you'll be OK using a different angle bit as long as you are making half-blind single pass dovetails, which use only the rounded side of the jig. In that case, your pins and tails are made using the same bit.
If you are making through dovetails using a straight bit on the side of the jig with pointed tapered fingers, then those fingers are tapered at 7 degrees to match the 7 degree taper of the dovetail bit.
ďWe should be careful to get out of an experience only the wisdom that is in it and stop there lest we be like the cat that sits down on a hot stove lid. She will never sit down on a hot stove lid again and that is well but also she will never sit down on a cold one anymore.Ē - Mark Twain