Probably just me but i don't get a good view from my righthand mirror ( just my elbow)!
Same here. The elbow does not block it totally like the OM
mirror. your current
extenders make a vast differance, but it's not quite pefect. I find I still have to move my head or move the elbow slightish to get a clear view on dual carriageways, swapping lanes etc.
They do make a huge difference when filtering around London traffic jams where you just swinging in and out of standstill traffic. I am surprised I haven't lost mine yet. But in a round about way it's better as it means I'm forced to slow down and be more cautious. I have lost numerous mirrors over the years with high speed filtering.

At the end of the day you get used to the width of your vehicle (bike in this case), find the boundary's and adapt. They stick out far enough so I don't clip my cans.
Because there is the elbow (double joint) there is loads of room for positioning them to your taste. They can be pivoted at the base, there is the pivot in the middle, then the
mirror. I find I have the base pointing directly outwards at a 90 degree angle, then I pull the (outer arm if you like) middle pivot inwards towards me, something like 30 degrees. Then the
mirror is pushed outwards on the ball and socket joint as much as it can go. It's hard to explain so I shall take a pic tomorrow! Anyway I find it compromise between how far the mirrors stick out and
mirror positioning. Longer versions may work out better as it would means that middle pivot point will be further out.
Sorry I'm rabbiting, thinking out aloud.
(:-})