After reading this blog, I was quite suspicious in moving forward and using flyl4l (in fact I posted some separate blogs on this elsewhere in FT), but after the last post, I thought sod-it, take the risk.
I just confirmed my flight with them. The service was excellent all the way through, and they explained everything to me. So far everything is going well. The booking is showing up on my personal airline bookings page and I've received all the documents from them (albeit 24hrs after booking it via online).
Flight is next week, so will let you know how it turns out.
ZRH-HKG (Rtn): US$4,690 - FIRST CLASS.
Bargain; just saved myself US$19,166 (if I had booked this today direct with SWISS.com)
Anyway, if all works out next week... I will be using these guys for ALL my travels...
Have faith people!