With the sway bar out of the way there are some on-car bushing presses that could probably be used. One of those tools though if you bought one you'd use it like twice in your life lol. VW repair manual had us remove subframes when replacing these, I always felt bad putting the OE POS bushings back in though...shame.
I just installed the Revo bushing, very easy install, but probably not as sturdy as the Racingline, at least just by looking at them. I read somewhere on here the machining on the Racingline was poor and they had to grid some flashing and burrs off before it would go in. For the sake of a nice install, subframe R&R is certainly optimal, just not the cheapest by a long shot. Warranty is 6.5 hours give or take .30 or so depending on the model. But, subframe R&R is a GREAT opportunity to install all sorts of suspension upgrades.