Hi @Retired_mod I have looked at this topic extensively and have even tried to implement it.
I am a champion of databricks at my organization, but I do not think that it currently enables the OLTP scenarios.

The closest I have gotten to it is by using the Statement Execution REST API using a SQL warehouse as the compute. This avoids the 3~5 minute delay on cluster bootup.

But even with that approach, simple SELECT queries against delta tables are still executed in the order of 5~10 seconds where as any decent OLTP (Oracle, MSSQL, mysql) will perform one order of magnitude faster (under 500 ms).