I think it depends on how you feel much more confortable, for sure always there is way to hide and to make it look discrete, if you can squeeze it in or make a flat surface then go also for some volume in order to make a flat area.
in my case i practiced all this year on positioning upwards better if it is erected, i put on two panties very tight the ones that are used to decrease the volume, and in small size.
i then use other butt enhancer panties and then a body shaper, the pennis is completely adhered to my lower stomach it cant more it cant do anything, it can eyaculate but only if there is friction, so is safe.
if i wear a pencil skirt i try to add a corset and put it before the butt enhancer panty in helping to flatten the area, it looks very sexy and no trace of a ny bulge.
this upward position adhered to the stomach is much more sexy on wearing tiny mini skirts that may flash out when bending or if moving fast, etc, if lets you show an arch on the crotch if you ever show it when dancing or walking or jumpoing, so give a great appearance.
i even can wear a swiming suit and the look would be natural.
the position allows you to cross your legs easily and without pain, let you sit down in any position or surface, even on a bike.
walking is better.
if driving the skirt goes up and you show the begining of the legs very sexy without a problem of a bulge.