Architective - It much depends on what your friend wants the long-zoom camera for, mostly, on the Safari. If it's Std HD Video - the SX30 has the best zoom functions, stabilising and controls, of the current crop of Bridge Zooms.
If he combined that with the excellent abilities of the bigger-sensored G10 for wide scenic shots - and it also does have some zoom for the midrange and closer things - those might make a good travelling pair. It also has RAW, for the wide-scenic and fine-detail shots, which the SX30 doesn't.
The combination of the bigger sensor and RAW in the G10 - which he'd know and use very well - is quite an advantage.
If he wants low-light abilities, and better performance at higher ISOs, in a long zoom camera, he could look at the Panasonic FZ100 or Fuji HS10.
The FZ100 has HD Video, RAW, and up to 11fps Continuous shooting. It goes to 24x on the zoom, which is very usable.
The HS10 is capable of very good images (for a P&S) - but it's a camera that has to be learnt, then controlled properly. But a person who'd choose and use a G10 wouldn't have any problems with it.
The HS10 Video - it has both Std and Full HD (the Std is the better of the two) - is good, but relies on "automatic" controls fully. It's good at constant zoom, and for short to medium length clips - but for "zoom in-out" repeatedly while video-ing - the SX30 beats it.
If he needs images in low light at high ISO - the HS10 is ahead of the SX30 there - you can use ISO 800 for low-noise shots, and at ISO 1600 shots in good focus will 'clean-up' very well.
If the only way to get a shot is to use ISO 3200 or 6400, you'll get images that clean-up to be very usable onscreen or for sharing, when display size is reduced, but don't expect "clean printables", at A4/US-Letter size.
In good light the 2x integrated digital zoom is quite usable - particularly if kept to about "virtual 45x" equivalent.
Like the FZ100, the HS10 has Fast Continuous shooting - 10-7-5-3fps - with the claimed 10fps being 12fps+ after firmware update 1.02. Speeds in RAW and RAW+JPEG are 5 and 3fps.
The Fast Continuous function does let you get shots you'd have to be fast, alert - and a bit lucky - to get on Single-Shot. Why Canon didn't upgrade the SX30's 1.3fps Continuous to at least 5fps / 3fps - is a mystery.
Another camera he could look at, though getting a "bit older" now - is Canon's SX1 - which has HD Full Video, RAW, and 4fps. However, as it has the same 20x lens assembly as the SX10 and SX20 - it's not up to the SX30's video handling performance.