Paul,
I had a bad experience with the synergy seals on my 43 mm WP forks. The synergy seals have to installed perfectly or the seal is very easily damaged. I learned the hard way with very poor synergy seal instructions and ended up having to purchase a second set.
The new synergy seals appear to be more like std fork seals.
I personally would just buy the std seals from other sources and add seal savers to keep crud out of the fork seals.