pattern - What is a Scalable Phrase™?

Now that you are familiar with Cyclone Phrases, let's look at another kind of phrase.

If a phrase adheres to a certain rule, then I call it a Scalable Phrase™.

Use the examples below to find the rule.

EDIT: I added the visual tag as a hint.

If you liked this puzzle, try others like it:
What is a Cyclone Phrase™?

What is a Triad Phrase™?

Answer

Here is my answer:

If you are coming from the left to the right, then "Scalable Phrases" are climbable while "Non-Scalables" are not climbable. Scaling a phrase refers to climbing it.

For a phrase to be climbable it has to be composed of climbable letters.

A climbable letter is any letter that, if you are on the "floor" (where the letter sits) then you can "climb" up the letter because no angle from the bottom to the top is greater than 90 degrees, or perpendicular from the floor. For example, V is not climbable because coming from the left the first obstacle (the \ of the V) is sort of an overhang. T is also not climbable even though the beginning is climbable, but then at the overhang it is not. H, F, E, M, etc are all climbable letter because they have no overhang.

Notice that I in the font chosen IS climbable, although in many fonts it is not, since it has an overhang.

Here is a full list of climbable letters:
ABDEFHIKLMNPR

Here is a full list of nonclimbable letters:
CGJOQSTUVWXYZ

Really nice puzzle!!