Trikes, by nature do need to take a bit more of the lane. It is just the nature of the beast. Trike riders accept that and deal with it. The ones I met on tour loved their trikes and seemed to be doing fine. They look like fun and seem like a reasonable enough choice.
The thing is that for me trikes just don't scratch the right itches. For me it is about the familiar muscle memory of 1000 little things related to riding a two wheeled bike.