Notwithstanding all the above, it does say on the ad for this London party 'nur mit Condom' which means 'only with condom', so I guess she isn't doing her usual BB gangbangs on this tour that she often does in Germany.
External Link/Members OnlyI have no experience of it, but there appears to be quite a scene in Germany for AO (Alles Ohne or Everything Without ie. BB) Gangbang Parties with one or multiple girls. It is well organised...the punters all have to submit to a Rapid HIV test and if clear receive a coloured wristband that will then allow them to fuck the girls bareback. You can see the wristbands here at an AO (BB) gangbang that Susi participated in.
External Link/Members OnlyThis Twitter seems to be where a lot of info is posted...
External Link/Members OnlyOf course puntico's accurate info regarding window periods where an HIV infection doesn't show up on any current test means this set-up still carries an inherent risk of infection. How that compares to the risks of OWO with untested partners I don't know.
Just to reiterate, this party tour of Sexy Susi is advertised as 'only with condom'...nothing about limiting the number of guys though...