Not sure what you're getting at here. I'm post trib and I accept all Scripture."We which are still alive will be caught up."
The Post Tribbers have no ability to integrate that statement into their ideas. They never say a thing about it, and the unexpected suddenness of it happening without the duress of Tribulation being present.
People in society will be just going along with their lives of conducting business and domestic activity. Then, the immediate rapture will happen. But only for those looking for it. The Church and Holy Spirit will then be gone, and all Hell will break loose on the Earth under the Antichrist.
It will not be "tribulation" for 7 or 3-1/2 years, because only the Saints go through Tribulation, not the lost. The Saints will be will be gone, hence no "tribulation" will be there. This is much more simple and Scriptural than Believers having to tough it out through the Antichrist, mark of the Beast, and martyrdom.
Titus 3:5 states "We are saved through the washing of regeneration and the renewal of the Holy Spirit," not by tribulation or martyrdom. You now are accountable for knowing the Truth of Scripture. That is a statement used both in Scripture and by many preachers. "To those whom much has been given, much will be required."