I've been changing the oil/filter on a 08 RX350, a very similar setup. It's not bad at all, it's actually less messy compared to the conventional spin-off setup. They provide a plastic nozzle that clips on before taking off the housing and directs the oil to a similar direction as the location of oil drain off as the engine oil pan plug. You can use the 4 dollar "universal" 65/67 mm oil filter wrench from Walmart like I've been doing the past 8 oil changes but if you get one that is 65mm (exact I believe) you won't have any slippage problems. Just don't overtighten anything, as long as you do that, you're good to go.