oil swap

[Texastoad]

I just bought a 09 yukon SLT2 with 72K on it. The previous owner in running Royal Purple in it and its due and oil change soon. I like Amsoil myself....will it be a problem swapping over to the Amsoil? I was told no by the Amsoil dealer.
OPNIONS please

 

[NathanJax]

No issues in swapping over