Perhaps Warlord is developing a social conscience? M10 is an experience for a lifetime promoting: A powerful worldwide resource that creates passion and desire in young people for this generation. Empowerment for volunteers who are willing to serve with compassion Change for young people who need to believe that their present situation can be changed. http://www.m10.org.uk/about-m10/what-is-m10
But no I think its a cross marketing opportunity...guess the price. Soldiers are cheap
S And S models are 1/60th Scale as you noted. However the difference between say 1/56 and 1/60 is only going to be minimal. As long as you don't get vehicles of the same type in the 2 scales then IMO you should be alright. Shaun from Sand S models is helping me in sorting out a 20mm Cold War Soviet army and I can assure you the quality of the castings I have received have been very good and clean with no air bubbles on detailed surfaces. He is a very knowledgeable chap and very nice to talk to and is an active hobbyist as well. Turnaround times are longer than the large established companies, as this is a cottage industry, with castings done to customers orders but IMO well worth the wait.
He is happy to advise you at anytime the progress of any orders that are placed with him and will always return your calls if he is unable to take them at the time.