I approach everything as chamber music. Even with Beethoven symphonies, I lead from the violin and basically encourage the orchestra to think of it as a giant string quartet.
In concertos, I stand up, and I conduct with the bow when I'm not playing. During symphonies, I sit, but sometimes I stop playing to conduct. Being seated in a section allows me to feel more like we're playing chamber music, which is how I like to approach it.
I started directing chamber orchestras, then adding bigger pieces, adding winds, adding small symphonies. I've always loved chamber music, and I've done a lot.