I had a quick look. Their market neutral strategy is about going long a diversified (50-60) basket of shares which they think will outperform, and shorting a equally diversified basket of shares which they think will underperform, over a 1-3 month timeframe.
Market neutral strategies are nothing new and can generate very good risk-adjusted returns in the right hands. There aren't a lot of evidence to conclude whether they are the right hands or not.
By way of example, in the quarter ended 30 Jun 2014, the best performing 50 stocks in the ASX200 returned 16.1% on average, while the worst 50 stocks returned -16%. So if you were to nail every single one of them, you'd earn 32%. The quarter before that, the percentages were +21/-14.5%.
Given that they are only talking about a 15-20% per annum target, and assuming they "rebalance" every 3 months, they only need to capture ~4-5% of the 30%+ disparity available. So while it may not be easy, it'd certainly be in the realm of possibility.
The questions I'd be asking them include:
1. Do they have audited broker statements for past performance?
2. Which institution / broker will be used?
3. How many clients / total FUM do they have?
4. How quickly can one access his own money (i.e. make withdrawal)?
5. What are the management fees?
6. Tax implications (e.g. you may have incurred capital gains/income even when you don't make any withdrawals)?
7. Will they email you actual statements over the next 3-month before you committ? That way you can essentially walk-forward test their strategy.