Hello all -- first post!

I will be finishing a couple walnut table tops and want to fill the grain. I already purchased some Aqua Coat grain filler for this purpose -- but I did not think about compatibility with waterlox before purchasing.

Has anyone had experience using these two products together? I am concerned b/c Aqua Coat is a water based product, and Waterlox is a varnish. I am thinking and hoping I should be ok, but I thought I would check with the community first. I dont have any scrap for this project to work on....thoughts?