Had no "bedding in" probs here but I have to say the flipper is one very, very good tool!! It's not as good in very tight spaces i.e. small panes but everything else you're flying with it. I use it on most of my trad work now, it saves time & is less hassle but it requires a regular refresh so your bucket is to be at hand more than it would with a normal applicator & squeegee as the flipper pad doesn't hold as much water.This is sometimes a pain on huge glass but more often a blessing as there is hardley any wipe-up afterwards. Because the pad lubricates the rubber as it trails before it (in squeegee mode) it makes for a far easier & better job, especially in the sun & because of this the rubber lasts for ages! As you use the swivel action it takes less effort to do the same job and gives you more reach at any angle.
I am like a kid with a new toy with the flipper, it's a joy to use.
The best advise I could give though is that you will need time to get used to it. It's a new, different way of working.

Haven't used the seperate applicator & squeegee wagtails though.