Alex - I wish you luck in your quest - they are both very desirable plants. However, I believe they are not widely cultivated & are said to be difficult. I have known only one person who cultivated both, very successfully.
In 2001 I carried out a survey for the Frit Group of frits in cultivation (see Fritillaria no. 9). Of the 103 people who responded, 6 claimed to grow F. falcata & 15 to grow F. pinetorum. For comparison, 15 claimed to grow F. gentneri & 8 to grow F. japonica.
