Ensure Block's Text Style Used @ Insertion

Attributed Title Block-

It consists of two text styles; Arial Narrow.ttf and Romans.shx

MAIN QUESTION
1.) How do I ensure that these are preserved when inserted into any AutoCAD file?

2.) Are there any diadvantages to using two text styles this way?
3.) Are there any disadvantages to using .shx fonts?

Would this be a non-issue if inserting into a template-based file?

 

The only problem I can see is if you have defined the 2 styles with
different fonts in the TitleBlock drawing and the drawing for insertion.
Example -
TitleBlock drawing
Style1 = Arial Narrow.ttf
Style2 = Romans.shx
Drawing for Insertion
Style1 = Simplex.shx
Style2 = Romans.shx
This can cause a problem when the TitleBlock is inserted.
When you insert TitleBlock into the drawing the Style1 in the TitleBlock
(Arial Narrow.ttf) will change to Simplex.shx.
So, long as each style name uses the same font, there shouldn't be any
problem.

There are no problems using TTF fonts, except that they take longer to deal
with in AutoCAD (although with today's computers, this shouldn't be a
problem). Also, grip selection is a little more of a hassle sometimes.

 

As long as the style names are uniqyue enough there should be little chance for conflict.

style name BDRSTYL-01 uses font Arial Narrow.ttf
style name BDRSTYL-02 Uses font Romans.shx

 

Understood. Thanks