Late to this tread, used Slime tubes on my pushbike, since had only one puncture in the last 2/3 years, I can remember and was able to reinflate and finish my journey so I'm a fan..
Problem I found with Swalbe marathons (have them on my Brompton) is that that I found they were an absolute bugger to get on, I do not want to be roadside struggling with that.
Problem I found with Swalbe marathons (have them on my Brompton) is that that I found they were an absolute bugger to get on, I do not want to be roadside struggling with that.