This discussion shows in a way how pervasive the Mr. Kipper myth has been. Once one absorbs that Mr Kipper was fictitious, the presumption still tends to be "If she didn't meet Mr Kipper at 37 Shorrolds o/s, who did she meet there?" Answer: nobody, because the meeting was fictitious too. But this is how 'sticky' the Mr Kipper story is. If he wasn't there we reflexively want to place someone else there, such as PSS and TS, whoever they are.
If you step back from it a bit, the idea of abducting her from a house viewing makes little sense. If you want to assault her then OK; you get her into an empty house, and afterwards you make your escape, perhaps in her car. But how does the set-up help you if you intend to take her away? You have to get her into your car, or get yourself into hers; you have to do it before she's missed, which may be very quickly; and once she is, her colleagues know exactly where to look.
To my mind, this is the problem with any abduction scenario one can think up. If an abductor wanted to lure her somewhere, why didn't he lure her somewhere after work, so she won't be missed for 15 hours or so?
I wonder if the pub thing is another red herring; I mean yes, that's where she headed, plus she needed to go home to pick up her tennis gear, but I don't see why either destination bears on what happened to her. She could be under that pub floor or on the embankment, but unless there's something important DV hasn't shared (eg that someone working at the pub was a convicted sex offender), why would she be?