The large ring on the 2x10 is not usually as big as the large ring on a triple so it would be more like shifting little to middle. The little ring I think is a little bit bigger. But if you play around with a gear ration chart you will find a lot of combinations in a triple are duplicates. I believe the bottom line is with a double you lose your biggest gear (hardest effort in big ring) and maybe your absolute granny.

Not for everyone but I think you may like it Limewave since you are a racer and have said you liked the more aggressive bikes anyway. Have fun!