Pumping LCM and cement through drilling BHA.

I am wondering what experience and comments the good folk of the community have in the following scenarios;
1) Max concentrations of LCM with just a mud motor (PDM) in the string.
2) Pumping a cement plug in bad lost circulation zones through (a) just a motor and (b) a BHA including a motor and MWD tool.

Thank you.

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