I always use two different styles for every song I play. Quite often I use 4/4 for each verse and 3/4 for the chorus or vice versa.
As I am NOT playing music for people to dance to , I won't get anyone's feet tangled up.
If I want to play "Waltzing Matilda" I put a style which sounds pretty good to me into Registration Button Number 1 and then put another style which sounds pretty good to me into Registration Button Number 2
This gives me 8 variations to use when I am playing "Waltzing Matilda", instantly accessible by pressing Registration Buttons Number 1 and Registration Button Number 2
I don't worry about tempo as often a chorus will sound great if it is played slower [or faster] than the verse.
Then, if I want to lock in an arrangement for another song for eg." I'm Dreaming Of a White Christmas," I lock what I think are appropriate styles into Registration Buttons Number 3 & 4.
I own stacks of sheet music, and I quite often find that a particular song is published in 3/4 by one publisher and 4/4 by another publisher, Interestingly, I own 4 different copies of "Waltzing Matilda" and they are all in 4/4
I also was interested to find out that many of the Hymns are in 3/4 {Waltz] and I always thought that Churches were solemn places.
I have never made up a style [sounds like hard work to me] I use ready made styles I find on the PSR Tutorial site, and the only change I make to them is to sometimes lock in a different tempo.
I find that many songs are boring if I only play them using one Style.