I not sure about speed but my opinion is then is another useless skill like hunter :) It so familar to Diablo2 Sumo Druids (is character build), not all like when something follow they and now i will need it to train just to keep my overal & experience ratings in hiscores.. i very hate it and i have without sumoning big plans what to do.. just maybye it a bit free hunting grounds. Another thing what i understand is not cheap and speed equal will be i think from ammount money which you are decided to invest, like you train combat killing monsters and getting charms too, then just how much you got charms you can train sumoning, elsewhere you will need to buy it on GE what mean then a lot of players will try to buy, what mean then prices will be not cheap, another thing is shards you need a lot of they for any pouch...