Chris Reeve approves of thumb flicking a Seb open with no wrist action.
A gentle thumb flick open is the same as using two hands IMHO.
I have a beater 1999 BG42 that's been used pretty hard daily and still smooth
as silk. I always thumb flick it open. Blade play is not going to happen on a Seb.
I lube it with Mineral oil and touch up the blade on a fine ceramic stone weekly.
Was watching the Miami-Florida St game yesterday (what a great game!) and
was touching up/lubing my knives, must have flicked the Seb open for an hour.
Wasn't even thinking about the knife.
No blade play, perfect lock-up, most simple and reliable folder I've ever owned.