Interesting inputs here! My mother trained me and my dad to sit and pee, (otherwise we would need to clean the bathroom), so sitting is nothing unusual for me. But I just can't do it in any public restroom, not in Europe (and I grew up in the country that is known for being notoriously clean), nor in any other country in the world. Professional knowledge and personal phobia prevent me from doing this.
I have not enough mass left in my male stuff that anything would move around uncontrolled, it is just handy to have that little hose, if one needs to pee in public restrooms. I am still in the gender fluid mode, and still go most of the time dressed as male. Male clothing does not cause any dysphoria for me, and I wear what seems to be best at a given time for a given event.
My biggest dysphoria are my hands, because I feel they do not look very feminine, and no clothing in the world can cover those up, unless I would wear gloves, and that would look funny here in SW Florida.
