Ellbee,
The " Over friendly " aspect could be a problem but so far I haven't had any , I will add it's usually more from GGs , it doesn't realy bother me which gender it is .
Lets not forget some people have never met a trans person before , I'm sure we intrigue some and possibly scare others , I find the majority are very much on your side but as you say if they find you socially acceptable . Also of course some do genuinely think you are female , I've fallen into that trap not realising . The reaction I've had on more than one occasion is a look of confusion when I've mentioned my wife , so I've stopped doing it however it's perfectly OK to talk about children and grandchildren .