PH, I'm real interested in how your project turns out. As a male, I can only answer a few of the questions regarding pole clothes and shoes.
What would you consider "pole appropriate" clothing? What makes it "pole appropriate?"
There is a wide selection of pole clothing available for women, but for men it's a limited, very limited selection. For the ladies, pole appropriate clothing, along with proper fit, is that which doesn't let the ladies upper parts fall out when they invert, and keeps the lower part covered when they do a showcase, or a split. For guys, it's keeping the lower parts from inadvertently going on display, which is generally reconciled with a good fitting pair of underwear.
The skimpiness of the clothing is inconsequential, but the importance is how effectively it works to conceal. In pole, at least for most of us with limited pole experience, you need to have good skin contact to do the holds.
I have only found several limited sources for men's pole shorts, and they're not really pole shorts. One pair I have are yoga shorts. The others are lined boxcut men's bathing suits that work adequately. You need to have skin contact, and longer shorts don't do it for me.
In my opinion good quality sports clothing covers the aforementioned specific areas. At the studio's that I attend I have not encountered anyone wearing sheer, or see through type outfits. Based on the ladies that I pole with, I don't think this would be tolerated in a pole regular class. In private sessions where people are free-styling it would be alright.
Is there a difference in "pole appropriate" clothing/ shoes for men and women? Why?
When the ladies at the studio go to the high heels then I will generally put on a clip on bow tie. I think the heels add a sexiness and finish to the ladies moves. The moves are the same without the shoes, but the shoes change the visual for me significantly. Plus, when the ladies do holds on the pole the shoes seem to elongate the leg, and accentuate the finish of their pointed toes. It's as though the shoes help to enhance the appearance of a straighter leg.
There seems to be this historical aura surrounding pole dance/fitness about really skimpy clothing. The really skimpy clothing comes into play in erotic pole dancing. For that entertainment I direct you to a strip club. Unfortunately, pole dance/fitness gets tarred with the same brush as erotic pole dancing. If you're going to a pole dance/fitness studio to see skimpy clothing, trust me, you'd be better off going to the beach. If you really want skimpiness, buy an airline ticket to a beach destination in Europe. Enjoy!
The lack of total sports clothing coverage for poling is due to the necessity of skin contact with the pole. You will hear this unanimously from everyone who poles. I can tell you that it's not fun putting your exposed skin against a cold pole when you begin a training session.
PH, the other questions surrounds shoes and I really can't answer them. The same applies to this segment of your project as the previous one I answered regarding why I started poling. I know that I speak for the others on the SV website in wishing you all the best on the successful completion of the project. Very happy to spend the additional time to respond to your survey questions. Thank you.