You'll probably get divided opinions, but there is no way I would view a MS school as if my child was 'typical'. Darling Mirabel will get (in some schools) a very different reception to 'child who needs support'.
I also would not visit a school without taking my child. Because Head Teachers can wax lyrical about their inclusive stance, their resources for children who need support, etc., but they can't hide their body language and natural instincts when faced with a real child with SN.
The first school I looked at (MS), the one I was certain would be good for DD1 if she was indeed going MS, was awful. Darling 'Eleeeaaannnooorrr', whose Daddy had been educated in 'Bahhhraiiiinnn' was given a beaming smile, handshake and direct eye contact with a 'we're going to see if we can find you a nice school place'. DD1, who was climbing the walls from having been kept waiting for over 20 minutes and couldn't cope with being booked at the same time as another family (which was explained quite clearly during our long telephone conversation) got a cursory 'Ah you must be Lougle's DD. Hello.'
I was even told off by a staff member for parking on double yellow lines, until I pointed out that the blue badge on the dashboard meant that I could. The head teacher told me that unless I got her a maximum statement he wouldn't be able to help her.
The second school, which I wasn't too keen on (but turns out to be outstanding and DD2 now goes there!) were amazing. Waiting at the door for DD1, changed the route of the tour to allow her to see something that had caught her eye. Found a friend to play with while we went for the rest of a look around. Offered a meeting with the SENCO to discuss the sort of things DD1 might need and what ideas they had. At that later meeting, the deputy head came from her classroom, having heard DD1 kicking off in the SENCO's office, and simply said 'we are just about to have fruit and milk for snack time; would you mind if I take her down to join us?' She wasn't even 'theirs' yet, but they were already accomodating her. They told me that even if for some bizarre reason DD1 didn't get a statement, they would give her the (full) 1:1 that she needed while they fought the decision with me. They were already providing full 1:1 for a child whose mother had resisted the SN process because she couldn't cope with the implications, but suddenly realised how much support her child would need. They were waiting for assessment, but had already met his needs because he needed it.
As it turns out, she was given a Special School place. But I know that while not appropriate, the second school would have done their absolute best to make her time their as good as it could be.