Hi mate,
I've got the Flywire Century II boots and use them for batting.
I find them quite heavy and substantial and love the look of them (once you navigate the expected mic taking), however I only started using them this season and since I changed I have found I get moderate pain in my shins after a long day.
Now I can't put this completely down to the shoe (possibly more caused by the, somewhat substantial, weight passing through my feet and the fact that I am flat footed), but I have never experienced this before.
On reflection I wish I had gone with the Asics Gel Advanced 3 as I believe they would probably be more suited to an opening keeping batsman!
I hope this helps but if you have any specific questions please ask.