I am about to finish the electrical part of my plane (apart from avionics). So, not flying yet.
I'm happy with my choice: all switch breakers for pilot side toggles (apart from battery/battery + alternator, which is a OFF-ON-ON switch and apart from alternator and starter breakers, which are just beside battery switch and are push/pull breakers) and all push pull breakers for copilot side.
I made four bus bars: main bus bar 1 (alternator PP [push/pull], starter PP, avionics SB, strobes SB, position SB, taxi SB, landing SB, fuel pump SB), main bus bar 2 (flaps PP, Pitot PP and the other PPs) (these are connected via a big #8 wire), avionics bus (another big wire #8) (all PPs) and ebus (all PPs). It is complicate, but finally it is not other than a segmented line of bus bars.
Switch breakers pros:
1) you save all connections between a push/pull breaker and a switch;
1-bis) you save panel space (I decided to put all toggles in the lower U channel bar, so switch breakers were the only answer);
2) maybe, you have all identical toggles.
Switch breakers cons:
1) they are not smooth as switches (i.e.: require more force to engage) (nothing terrible, anyway);
2) the last less, I read, than a "regular" push/pull breaker;
3) they only come in the OFF-ON flavour; so, if you want to have "strange" combination toggles, you will have to mix SBs with switches.
Camillo