Well, this is interesting: What, exactly, is the difference between selling BTC that you own, and selling BTC that you borrowed on marginother than the latter costing interest money (and having unbounded potential lossbut I note you said you set a stop-limit on the upside)?
Main difference for me really is that I can trade with around 5x my balance while still only risking 1% while scalping, see for example if btc is at $10000 and my trade suggests a stoploss at $10020 and a take profit at $9900, i have a 5:1 RRR here, but normally on spot exchanges id only be able to just sell my own btc and profit off of the difference, so id make a 5% profit on that, but on a perpetual swap i can borrow 5x my balance to sell, if my stoploss hits i still only lose 1%, but if my take profit hits i make 5% rather than just 1%
I dont see how that would protect you from an unexpected pump in the market,
Im only exposing myself to a 1% risk per trade, so in case my stoploss hits i only lose 1%, and if my stoploss is hit my balance is just the remaining spot btc so i really only just lost the 1%, not any potential profits from a rise