Not sure what you are asking.
You can use it both ways on both versions, i.e. set off with it engaged or, use it as you do, pull the brake lever to dis-engage it before setting off.
However, on the earlier version, when setting off with it engaged, you had to give it loads of revs otherwise it could stall. I found one way round this was to give plenty of revs and release clutch till it just started to bite, then engage clutch again which, in most cases, released the brake. This was too much of a faff, it was easier to release it as you do. IMHO this made it pointless unless you were going to be stopped sometime on a steep hill, so I very rarely used it.
On this new bike I've used it a few times already, mainly when stopped at lights on a hill, when they go to green I just set off without thinking about it, it releases smoothly every time.