I tried using Olympic shoes for squatting but I ended up with ferocious knee pain. I need a flat soled shoe for squatting. But I will use Olympic shoes for benching once I am 3-5 weeks out from a meet and my intensity ramps up.
Bench and Deadlift: Sabo Goodlifts. Really good shoes if you want a flat soled all purpose powerlifting shoe.
Bench: Olympic lifting shoes. Get really good heel drive.
Press: Whatever I feel like. Shoes make very little difference on this lift for me.
Before I bought dedicated powerlifting shoes I lifted in Reebok Crossfit Nano’s (and still sometimes do if I forget to change shoes after jumps and throws). They are minimal but sturdy and work well, but I found my feet tended to shift a bit when wearing them. When the intensity ramps up I feel like I needed something significantly more secure and decided to purchase dedicated lifting shoes.