As far as Judo goes, I think that someone has asked before on these type of discussions why being able to pick up a resisting opponent and dump them on the floor (often from a dizzy height) shouldn't be seen as a decent system of self defence/martial art whether sport or no? Also the Judoka that I have met have always come across as friendly and open minded.
So, respect to Judoka.
As far as other martial artists view of Aikido, those that have tried it tend, in my experience, to respect it. As to the others, well they will always have their prejudices.
Am I the only one who thinks that, from a tactics point of view, it can be better to let them go on thinking that all we do is a bit of new age dancing?