No I have not seen through a 2" EP yet. I am hoping to tag along to the next Newcastle Astro viewing night in Shortland and look through some other people's scopes while I'm there. I was going to go to the last one but I forgot it was on.
I probably will end up mixing 1.25" and 2" EP's in my collection. Doesn't really matter except I will have to keep changing the reducer and my Barlow won't work on all EP's. As the 2" will only be a widefield I don't need to use it with a barlow anyway so that doesn't matter either.