Fred,
The Portuguese Vergueiro is a nice rifle action and it will make a good project. I did consider using one of them however the Dutch came along first.
I certainly can make another Lyman 36 but I am keeping my options open. Looking at designing my own sight.
The cocking piece sights do effect lock time, however on a Dutch Mannlicher, as well as all of similar design, one thing they can not be accused of is having light weight cocking pieces. smile A small Rigby peep would have minimal effect.