I'm trying it out now. Took 5min+ to sync my 180 calendar events and is taking forever (it seems right now) to sync my 1000+ contacts. I will try out for 30 day free trial, but I will only be paying the $5 yearly subscription if they allow distribution on the F-Droid repository since I prefer to not have Google Play on my phone. Open Whisper Systems has been frustratingly adamant about not wanting to distribute TextS…
After first sync you will never have to experience a sync operation anywhere near the length of that but it is a bad first experience to have with the app. Very close to the top of my TODO list is "support bulk upload" which will cut the initial import time (and bandwidth) considerably.
Soon we should be able to upload entire address books and calendars in one POST request, working on it :)