I have Roger's book and it is a great resource.
Now, back to the OP's question about models squinting due to the flash/light, I don't use the Arri Fresnel equipment, so I am unfamiliar with the output. I have done several sessions where I have attempted the Hollywood Glamour Lighting and I don't recall my models having trouble with squinting. I recently did one this past winter at a very upscale old hotel in Toronto.
Now that I recall, many of my images have the model facing one way and the lighting, although focussed on her facial area - she wasn't looking directly at the light. During those images where I needed the model to to look at the light, I used the model light to place the light and then do a 'count down' so the model's eyes are in the direction of the light for a minimal time.
For those of you that are unfamiliar with lighting equipment, most modern equipment have two lights - the model light and the strobe itself. The model light is used to prepare for the actual shot - which uses the strobe light. The strobe is much, much more powerful than the model light.
I also recall not having too much of an f-stop difference between the lighting of the room/studio and the model light. I would dim down the light to place the model light where I wanted, but then set the room lights back to normal before taking the final image. I used a very powerful ProPhoto strobe to ensure that I got the desired look without having to turn off the lights to darken the background. Basically, the shot was taken at something like f8 at 1/500s on ISO 100 film. Any room taken at that speed would be pretty dark. I think this helps a lot on the model's eyes.
The equipment I used was Prophoto with a spot attachment and a 10% grid before the spot attachment. I would also use the black foil to further reduce/direct the spot as I wanted. Fill was with a small softbox <--I know all wrong! I'll post some images whenever I get them scanned. I think there's a digital out take in Sabrina's OMP profile at http://www.OneModelPlace.com/SabrinaStarr. If I recall correctly, the image is labeled "Hollywood Glamour".
Hope this helps a bit.
Rgards, Art. (Yes, basically I used my $5000 Nikon D2X digital SLR as a light meter)