Look at this design of a Lumintop.https://www.youtube.com/watch?v=chQsUdfcpfU .
You can see that the second switch,ie the turbo-strobe switch, is more easily used.
Even better design,is that of Klarus XT11S.Look at this site and magnify the tail switces photo.Φακός Χειρός Klarus XT11S .
Plus this video.https://www.youtube.com/watch?time_continue=177&v=rhyfKvxP4U4&feature=emb_logo