Not at all. The fortunate thing in my little neck of the woods is that, while not all churches agree on eschatology, we are by and large in agreement on soteriology. But we would welcome in anyone holding to 5-pt Calvinism, or however-many-point-Calvinism, so long as they recognized that we are still an evangelical congregation where preaching is concerned. I have no qualms at all about sitting in worship service with amils, premils, or pre-trib-dispys. So long as we recognize the death, burial and resurrection of Christ as the foundation of our lives, we should be good. (For the record, I'm more "Free Will, Free Grace" Baptist than anything [my Pastor claims the heading of Missionary Baptist] and I have been amil all my life.)
I realize how my initial post that you quoted, EWF, is a bit unclear. I should have clarified that we tend to use the term "sister church of the same faith and order." That means we don't accept a membership letter from a Church of God, or Lutheran, or Pentecostal. Those folks, if desiring to join with our church, would require baptism into the church. Such is our tradition. That being said, anyone is welcome to join us in worship and to come as often as they like. They just won't have the same input on church dealings and officer elections as a "member in good standing" would have.
Does that make better sense?
My belief is that if a person is born again (under any Christian Church denom, or not) then that is the power of the holy spirit & the grace provided to the individual---the wind blowith where it wills....so yes a earthly church can & should ask questions to verify authentic HS experiences but what I see most of these churches (in my area) is nothing short of manipulation to becoming what they are....and I dont go that way. What is important to me at least is that they are authentic born again believers & that they have a strong desire to further the cause for Christ.