Even when one meets the pope today, casualness is the order of the day.
How we handle our Lord under the form of bread and wine has suffered as well especially in the lack of proper protocol all meant to uphold the dignity of our Sacramental system and the Signs which convey our Lord's divine presence in a visible way.
It was brought to my vivid attention that in some places, even when priests are gathered for Solemn Exposition of the Most Blessed Sacrament, that the actual "exposition" is carried out in a less than beautiful way, very perfunctory and uninspiring of no visible devotion and reverence.
For example a priest or deacon will "expose" the blessed sacrament not wearing choir dress or even an alb or stole, but simply a clerical shirt, pants but no coat. Reposition is the same way.
If I saw that, and I won't say I have or haven't, I think I would be offended by the casualness and lack of visible reverence in attire no matter how reverent the deacon or priest actually is. Sacramentals are by nature visible not invisible.