My thoughts too. Everything is great about this Sigma, IQ, speed, price, and the FL range is just what I most want for street photo taking and walking about, but it is too intimidating for street shooting and too heavy for walking about.
So, really wonderful lens, exciting spec and unbelievable price or value, but practically speaking it is not so desirable if you think about it with a cool head.
If an electronic Speedbooster is available for M43 mount, then it would be different. 25-50mm f/1.2. Now, that would be equivalent to four f/1.2 lenses, 24mm, 28mm, 35mm, 50mm. I think that is different and worth the weight, and wait. And, it will be stabilised by the nice IBIS in Olympus cameras.
Started out doing photography at the age of 6 using an uncle's old 1940 kodak brownie box camera. At 15 years of age, I decided to buy my very own 1975 Praktica SLR camera. I now shoot with a Nikon D850. I do unpaid TFP and commercial paid work.