Yes, I was certainly thinking about that. I could continue my unlimited Sky for £5 per month (albeit at speeds of little more than 1Mbs), and ALSO install Tooway with a limited quote package - perhaps £35 for 10Gb, or £24 for 2Gb. Then use Tooway for iplayer/Sky On demand/Lovefilm etc., and Sky broadband for general surfing.
However, I suspect it won't work.
I want the fast speed so that I can download the larger files - films etc. But of course, that will quickly eat up the monthly Tooway quota. (I don't need to speed up my general browsing, yest this uses up hardly any quota).
Is a dilemma.
The cheapest appropriate Tooway package for me, I think is £55 per month, which although has a 30Gb limit, provides unlimited downloads overnight.