'Slow-grown' clones are no different than test tube babies. In other words, no artificial stimulants to increase the growth rate, meaning if you wanted a copy of you as you are now (age 25), then you would have to wait 25 years. And Escaped Clone works with 'slow grown' clones, but it is explicitly said in Augmentation that fast-grown wimps are basically vegetables. A slow-grown clone, on the other hand, can live a perfectly normal life, because they're actually living, rather than just being put on 'fast forward' until their organs are the right age for harvesting.