The bars should not change. I have had clowns from 1.5 inches with strange patterns keep the patterns to 4-5'' currently. I have a clown with one stripe on a side, a 4 stripe clown, double saddle back, puzzle piece, all were small and are 4-5'' now and still are complete oddballs.
It could be hard to tell on a "saddle" if the loaches belly mid section is only .5 inch, but time will tell. I think it will keep it.
Be very careful with small loaches high mortality rate/ich rate/stress rate from my experience. I don't like to buy them under 3'' enless I really like the pattern and feel it is worth the risk.