It came out tasting like only s04 was used. It tastes clean and good, but it has zero belgian yeast character. If I make it again I'm leaving the s04 out. I don't see the point of it, and in my case it completely took over. At the very least I would pitch the s04 12-hours later than the belgian strain.
Most of the yeast flavor is produced in the first 12-36 hours during the growth and lag phases.