Drafting with non-standard scales?

I have always used traditional drafting scales with my drawings: 10, 20, 30, 40, 50, 60, 100, 200, 300.  I am starting to see more and more plats with non-standard scales.  Today I saw a recorded plat at 1” = 150’.

I get it.  I could use my engineering scale at 50 and multiple by 3.  But just because you can, does that mean we should? 

How about you?  Should I modernize my way of thinking?