Kindly let us know if there is any possibility to use both the https and MQ Transport test cases in same test suite
yes, you should be able to use both transports/protocols in SOAtest.
This is one of the main functionality of SOAtest where you can exchange protocols.
There is no limitation or restriction there. You can have some tests using HTTPS and others using IBM MQ. The transport can be configured in each test case individually. Having hybrid or multi-channel test scenarios, testing across different protocols and application layers, is a common use case.