Biggest problem I've seen with a trike gear is a nosewheel not lined up with the rudder. At low speeds the nosewheel does the turning, as you advance the power the rudder takes over. If the nosegear and rudder aren't both pointing in the same direction, it'll be hard to keep the plane under control--you'll tend to overcorrect. Not as big a deal on landings because it's slowing down, so it doesn't wander as far. But definitely a problem on take-offs.