I don't know anything about the particular firearms you own (bursa) but I have several Colt revolvers, and CZ autos, all with different holsters.
I do know about bike riding, and an ankle holster does not turn my crank at all. (pun intended) First concern is can you easily access your weapon when you need it. Also, when riding, you have to consider weight too.
I have 5 different hip holsters, (all leather) but if you are in normal bike riding garb, you probably will not be wearing a belt, so where do you go? Even a shoulder holster assumes a belt? Are you up to the extra weight of a belt? I would think a light belt and a shoulder holster (fabric) would be the lightest and most convienent.
When I ride, I just wear normal clothing, no compitition in this old man any more, but I do know that when ridding, I want the lightest pistol I own, and the lightest holster. For me that is a CZ82 in 9X18 and J hook restraint Level II belt holster. Oh yes, make sure you have good restraint (level II or Level III) in case you have an accident!