^^ dextrose is cheap, if you want an insulin spike there is no easier way to do it.
that being said, I have gone both routes in the past, using dextrose/maltodextrin and wms in my post workout shake, and not using any, I saw little to no difference personally. But everyone is different.
I don't do this for my family, my friends, women, accolades, pride, or ego. I do it for me and no one else, its just part of who I am.