The phrase "although this promise" is correct and usable in written English.
It can be used to introduce a contrast or exception related to a promise that has been made.
Example: "Although this promise was made with good intentions, circumstances have changed."
Alternatives: "even though this commitment" or "despite this assurance".
Although this shows promise for both the vocational and non-vocational outcomes for employees, there is an insufficient level of research on Social Firms in the UK to infer that they represent a viable health and social care policy strategy.
Although lobbying activities did result in promises by almost all municipalities to make funding available, only one municipality actually formalized this promise in a resolution.
Although this project promised exciting possibilities for biologically based manipulation of the growing face, the resulting data were interesting but in most cases not clinically useful.
For instance, although the promise of a polypill for prevention of cardiovascular disease events has been around for some years (18, 19), there has been little progress in this direction in developed countries.
Although this methodology indicated promise, it was never evaluated critically by these authors, possibly because of the high demands it placed on computational resources.
Although this technology shows promise, it still requires time and skill to obtain results.
Although this regimen shows promise, there is substantial cost and complexity inherent in the utilization of three manipulated donor products.
Although this approach holds considerable promise, it promises to be a complicated and expensive undertaking.
("Wow" is very W — it stands for "whatever, whenever," as in, "whatever you want, whenever you want it," and they aim to fulfill this preposterous promise, although I didn't put them to the test since most of my extempore desires are either obscene or illegal, or both).
