I have to say, if you plan on riding your build out and about, Berthets might not be the best choice. I've utilized them on fixed drivetrains before and they are not the easiest to get into and also find them to be a bit "slippery". Keep in mind that riders such as Berthet and Egg were well secured into their pedals from standing starts- not a very commonplace way to get going when heading around the block.
I would lean more toward, TA, Lyotard or perhaps Campy Piste Con Dente!
Sean Flores San Francisco, CA
On Dec 2, 2008, at 9:04 AM, firstname.lastname@example.org
> From: Jerome & Elizabeth Moos <email@example.com>
> Date: December 2, 2008 5:50:47 AM PST
> To: firstname.lastname@example.org, Andrew Gura <email@example.com>
> Subject: Re: [CR]pedal suggestions for stronglight 49D track cranks
> Reply-To: firstname.lastname@example.org
> Lyotard Marcel Berthet steel platform pedals. These were made from
> the 3
> 0's into the 80's. Totally appropriate for track, as Marcel Berthet
> elf is most famous for trading World Hour Records with Oscar Egg.
> Jerry Moos
> Big Spring, Texas, USA