Heya Beefums,
I also have a SW1911PD, I like it pretty well. It is light, tight, and plenty accurate. Also, the takedown on it is straightforward, unlike some of the other commander size 1911's.
I have been carrying a G23 for the last few years for reasons I am sure have been beat to death on this forum and others. Blah Blah.
I sometimes carry the SW1911PD or another 1911, just 'cause I want to.
I have alot of experience with the 1911, so for me the transition doesn't seem to be an issue; I am conscious of which gun is in the holster and which gun I have a spare mag for.
Is this transition somewhat permanent, like eliminating the glock altogether? If not, I see no reason not to switch back and forth if you are competent in handling either one.
I will say that I do carry the g23 far more often, but that is for reasons beyond the scope of what is being discussed here.
Good Luck,
Z