This isn't swivel related but all I got. Just bought a 12-24 ICON 1/2 chrome metric socket set. Comparing 19mm ICON to 3/4 Snap-on has no meaningful differences. Of course can't judge strength of steel but physically they seem equivalent.
Weight ICON 182gm SO 184 gm
Length ICON 3.266 in SO 3.261 in
Width ICON 1.019 in SO 1.042 in.
Socket attachment width ICON .509 in SO 0.510 in
Socket fastener width ICON 0.759 in SO 0.762 in
Sidewall ICON 0.129 in SO 0.150 in
Only thing that may be significantly different is the sidewall. Not sure about actual steel strength. Chrome looks similar the SO may be a tad deeper/smoother but for all practical purposes they look the same.
For $75 with tax seems like a good deal...
I cannot speak from experience here as I do not own anything from the ICON brand, but I can share what I have heard. It seems that the chrome sockets wear out quickly, becoming malformed. In fairness, I have also heard from fewer people that the issue has since been corrected. This information comes from YouTube, from those that used the tools themselves, professionally, and provided their opinions. Obviously anything on YouTube must be taken with caution, however, that opinion seems to be a common and shared one.
For what it is worth, I know that there is a difference in steel used. Snap-On uses a different steel, a CrNiMoB steel on their sockets. HF advertises the ICON sockets as using "chrome moly steel". If you have seen my posts, you likely have the opinion that I dislike Snap-On as well as HF, although I have not really discussed HF to the same degree as Snap-On. When I look at things like this, I try to remove my biases, which is hard for anyone to do. My general disliking of Snap-On is due to the basic benefit-cost ratio. At a certain price point, the received benefits diminish fast and it becomes more novelty, paying a "name brand" premium.
When I compare the companies themselves, Snap-On positions themselves as striving to be the best of the best, setting the gold standard. HF with their ICON line positions themselves to making the best copy of looking just like (and performing in some collaterals) Snap-On at a fraction of the price. I believe HF makes an interesting proposition here, possibly trying to remove the costs associated with the diminishing returns area. If I have a car with a top speed of 200, is it really worth doubling the cost to increase that to 250? For most, no, as the difference will never be used and is a novelty.
My opinion is that I have a disliking to ICON as I feel they are over priced. When you take a good look at their prices, you can find alternatives from brands like Chanellock when you compare their pliers. With the sockets, many seem to like the new Craftsman V-series, which the 12-24 set comes in at ~$65 (no sale or coupon price), including a magnetic socket rail. For a brand that positions themselves as a copycat brand, I don't think the semi-premium prices are appropriate. I wish I had more money, as I would love to try these different brand and tools, but I simply cannot afford to. So for me, I spend my money on what I see as quality based on experience. I say this because brands like ICON might have a stellar product, but I am not able to see this. This is a big reason I post and read here, so I can try to learn from others and their experiences. In turn, I provide mine.