Use the 1/1 syrup to simulate a flow, and give them pollen sub when they have nothing else. BOTH will help you get an early start to brood rearing. Once you start, dont stop until your sure they have a good flow. Typically, they will stop taking the pollen sub as soon as the real stuff is available.. Syrup.. some bees stop taking it, others dont, mine are usually gluttons, and will pack every cell in their hives with syrup if I feed them enough of it. I usually feed in spring with fewer holes in the jar lids. Enough to feed brood, but not enough to store away.
You will get the BEST queens when the flow is on.. if they are taking pollen sub and syrup, the chances are its WAY to early to make queens, because you wont have drones yet.. If you are feeding because of dearth in the summer, thats a different story. If in Dearth, yes, syrup and pollen sub will work.
I would however, like to see someone do a study on the queens produced from such a method compared to queens produced from natural pollen and nectar...