The Sherlock Holmes stories have been on my list for awhile. I'm generally not a huge fan of reading while high. My mind just won't focus. It can be okay depending on the material though. For example, I've lately been reading both a biography of Vivian Stanshall written by his widow (which includes a lot of art and has an appropriately loose structure- ####ing awesome so far BTW) and a collection of comics featuring Spiderman villain Carnage (silly violent nostalgic fun) and often read them high. But something meatier I prefer to read sober so I can focus and really savor the language (that's how I prefer to read- I'm a slowpoke who likes to reread certain passages that make an impression).
I do like the idea of a stoned 20 year old Tabs reading Sherlock Holmes stories and exclaiming "Egads!" to himself every time a killer is revealed though.