Anyone using "TextMatch" in a DataSource Datapoint? (without hard-coding the regex)

Is anyone using the "TextMatch" type of Datapoint Post-Processing Interpreter with a Property?

https://www.logicmonitor.com/support/logicmodules/datasources/datapoints/normal-datapoints  (search on the page for "TextMatch")

I'm building a DataSource using SNMP as the Collect method (to try and keep things simple) and I want to be able to parse the full output from nsExtendOutputFull https://www.circitor.fr/Mibs/Html/N/NET-SNMP-EXTEND-MIB.php#nsExtendOutputFull to look for an expected substring. 

For example if my SNMPd conf entry is 

extend splunk-status /usr/sbin/service splunk status

then I thought I could have a Device Property (or Instance-Level Property) containing the expected "splunkd is running" and then in the Datapoint regex it would be possible to drop in that Property name tokenized like ##TextMatch.substring##

Unless I'm mistaken, the only other way I'd be able to post-process text strings like this would be either

• a Groovy Complex Datapoint, or
• to completely switch the DataSource over from SNMP Collect to Script and write everything in Groovy (which I could do but I'm hoping to avoid that complexity)

Thoughts? Comments? Am I completely out of my mind to be thinking about a Property in a TextMatch Datapoint?