I use Rick's double anchor also, and have fletched the arrows I regularly use to accomodate the nose anchor.
I have a number of old arrows I haven't refletched, and occasionally I shoot other people's bows and arrows. When I do, I find that drawing the cock feather under my nose and letting it touch my upper lip (or moustache in my case) with arrows fletched in the normal postion works about as well as the nose anchor. There is very little difference in the impact point of my arrow if I anchor on the tip of my nose with a Welch fletched arrow, or under my nose with a regularly fletched arrow. In fact, I have a bunch of arrows I carry on roving shoots that are fletched both ways and I shoot interchangeably. Of course, for hunting or a scored competition, I would shoot only with the Welch fletched arrows, since that is what I'm trying to perfect.
If you will look on the cover of "Become the Arrow" by Byron Ferguson, you will see him using the "under the nose" anchor. Both Byron and Rick are great shots, and I'm not sure which anchoring method works best.