Actually bought Smithson for the first time on Wednesday.
I looked at their top 10 holdings and realised that 6 of them were on my watch list (of which 2 I own/owned).
The rest, I never bought as I thought the price was too high. Since FeverTree is their biggest holding, I sold most of my overweight position in FEVR and bought SSON (and GAW).
EDIT: and of course, FEVR goes up 8% today after I sell it!