I have been wanting to try out a few Clementi Sonatas myself - just haven't gotten around to it yet.
I'm strictly an amateur. I've learned several of the Haydn sonatas, so I thought I'd like to look at Clementi. And indeed, he seems to have been a very interesting fellow!
He was actually sort of a mean fellow.
The Op. 26, No. 2 sonata is in F# minor, but the first movement wanders as far afield
You're right - he was wandering about with Field. John Field, that is.
(that's why I said Clementi was mean - he treated Field very poorly.)
Other than a Dover edition of 10 sonatas, the Clementi sonatas appear to be completely out of print. Or am I wrong about that?
I just did a quick search and found a lot of his sonatas in various books. Check out this link - look down the list to the Peters Editions. They have a lot of sonatas!