Checked out Sparkasse. Their Freizügigkeitskonto product for private persons is done through Unabhängige Freizügigkeitsstiftung Schwyz who want 400 CHF for withdrawal. 25 CHF fee is actually for something else, doesn’t apply in my case
I suppose it’s still cheapest compared to SzKB (800 CHF) and Liberty (475 CHF), but still a tad expensive
Anyone knows a better option?