Rapha seems good but I bet it'll be expensive. Haven't found Mad Alchemy and the other brands here yet (or maybe I'm not looking at the right places).
Embro doesn't really make you wear less clothes since it's mostly for the legs, so you only save wearing a knee warmer or a long pants. You still need to wrap up your core properly. For those not too cold (and/or chance of rain) situations in late autumn/early winter and early spring I just embro. In winter embro is best paired with another part of kit (knee warmers, long pants, thermals, etc).What is the advantage? Wear less clothes?
Make sure it has capscicum (the stuff found in chilli) as the active ingredient. Embro is a warming agent.Any kind of menthol-infused muscle rub will probably do. Y's Road might have some proper stuff in their bigger shops (Ueno, Yurakucho etc).