I preface this my saying (as it seems I must) you can do anything you darn please, but I am a recent convert to tubulars and would never go back to clinchers. Ever. And I've had more than my share of bad tub experiences thanks to poor choices and the inevitable learning curve.
But I've switched to Tufo S-22s using their marvelous Extreme Tape process and yes the sealant. And I hate to post this and tempt fate, but so far no problems or punctures. And putting these on a rim takes less time and effort than clinchers. Honest. And I am as inept at this as anyone can be. I do have Clement Criteriums on my '80 Raleigh Team Pro and again, fingers crossed, no problems and the sweetest ride.. no clincher rides like this. And I don't buy this notion that tubulars puncture more than clinchers.
The other thing about tubulars and some will say oh here he goes again... it's what these machines were built and designed for. It means you can use the original and distinctive rims. And if you're happy with a modern wheelset on a classic bike... well great. I ain't. The rims and wheelsets of a bike are, to me, integral to its character, both in appearance and the ride "experience". No clincher rim looks like a tubular one like a gorgeous Mavic Monthlery Legere or even a run of the mill Fiamme Red Label.
I am so enamored with sew-ups, I want to get a set of sprint Conloy rims for my '48 RRA and set her up as a TT bike. An FC hub and a tubular wheelset on an RRA.. well no one is going to sell me on ANYTHING "modern" or improved when it comes to a bike. Not a chance. Especially when the rubber hits the road.
Peter Kohler
Washington DC USA